APA (7th ed.) Citation

United States. Post Office Department & ProQuest (Firm). (1830). Contracts General -- Post Office, 1829. Letter from the Postmaster General, transmitting a statement of contracts for transporting the mail of the United States, made during the year 1829. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Contracts General -- Post Office, 1829. Letter from the Postmaster General, Transmitting a Statement of Contracts for Transporting the Mail of the United States, Made During the Year 1829. Washington: [publisher not identified], 1830.

MLA (9th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Contracts General -- Post Office, 1829. Letter from the Postmaster General, Transmitting a Statement of Contracts for Transporting the Mail of the United States, Made During the Year 1829. [publisher not identified], 1830.